Cs0128 c# a local variable or function named is already defined in this scope

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C#编译器错误 CS0128

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bin_zone 2007-11-09 14:12:38 博主文章分类：个人成长日记 ©著作权

文章标签 职场 C# 休闲 文章分类 .Net 编程语言

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C#编译器错误 CS0128
https://blog.51cto.com/binzone/49844

今天在使用C#进行编写得的时候发现总是提示CS0128错误。

结果从网上找了些资料才发现，原来是在一个区域内声明了两个名称一样的变量。

来自微软的例子如下：

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Random prekey = new Random(); string[] firstname = {"Александр", "Михаил", "Иван", "Максим", "Артем", "Даниил", "Дмитрий", "Кирилл", "Андрей", "Егор"}; string[] secondname = { "Александов", "Михайлов", "Иванов", "Максимов", "Артемов", "Даниилов", "Дмитров", "Кириллов", "Андреев", "Егоров" }; string fullname = firstname[prekey.Next(0, 10)] + " " + secondname[prekey.Next(0, 10)]; int a = prekey.Next(0, 3); //string introduce; switch (a) { case 0: string introduce = firstname[prekey.Next(0, 10)]; break; case 1: string introduce = secondname[prekey.Next(0, 10)]; break; case 2: string introduce = fullname; break; }